1261B User Manual
Racal Instruments
Ó
1995
Specification A-11
Table A-8, SMS Monitoring System Specifications, ( Typical )
Characteristics
Description
Auxiliary Rear Panel DC Voltage Outputs
Voltage Current
+5 V 1 Amp maximum, (Self Healing
Fuse)
+12 V 1 Amp maximum, (Self Healing
Fuse)
+24 V 1 Amp maximum, (Self Healing
Fuse)
Maximum slot temperature (
Tmax
)
Rear
Panel Output Voltage
100 mV per
o
C, 0
o
C corresponds to 0 V output
± 1.5
o
C accuracy,
-5 to + 85
o
C range
Maximum slot Temperature Rise (
)
T)
Rear
Panel Output Voltage
100 mV per
o
C, 0
o
C corresponds to 0 V output
± 1.5
o
C accuracy,
-5 to + 85
o
C range
Fan Speed
TACH
Rear Panel Outputs
2 Pulses/Rev, each fan has TTL level Tach
output
Fan Speed Range, typical
2000 to 4800 RPM
VXI Power Supply
Voltage
Front Panel
Health Status Readout
LED bi-color (red-green) annunciator
green indicates supply within tolerance,
red indicates supply out of tolerance,
Tolerance limits: V nominal -8.75%, +10%
3% accuracy
VXI Power Supply
Current
Front Panel
Health Status Readout
LED bi-color (red-green) annunciator
green indicates supply within tolerance,
red indicates supply out of tolerance,
Tolerance limits: 107 % of rated current,
7% accuracy, at full scale
VXI Power Supply
Temperature
Front Panel
Health Status Readout
LED bi-color (red-green) annunciator
green indicates supply within tolerance,
red indicates supply out of tolerance,
Tolerance limits:
)
T
> 20
o
C,
Tmax
> 75
o
C
± 1.5
o
C accuracy
VXI Power Supply
Airflow
Front Panel
Health Status Readout
LED bi-color (red-green) annunciator
green indicates supply within tolerance,
red indicates supply out of tolerance,
Tolerance limit: Fan speed > 900 RPM
± 100 RPM accuracy
Table A-9, EMS Monitoring System Specifications, ( Typical )
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